If I have all my shaders set to row_major with:
layout(row_major) uniform;
layout(row_major) buffer;
Using std140 and/or std430 layout what should happen when I read or write a mat4x3 from buffer objects?
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Nicol Bolas
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iam
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It's not clear what you mean by "what should happen"? What should happen where? In GLSL? In your C code that feeds the buffer? Also, [please see this](http://stackoverflow.com/q/38172696/734069). – Nicol Bolas Aug 06 '16 at 14:11
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I mean in terms of whether the reads and writes in those cases should be transposed - I have actually encountered a problem where nvidia and AMD are behaving differently with this and I am not clear on what the spec intends should actually happen. Your link was quite helpful thank you - in that it does appear that for mat4x3/mat3x4 it's just safer to write manual code to write and read such values given driver issues – iam Aug 06 '16 at 14:21